CN-122002756-A - Heat dissipation device and vehicle

Abstract

The application relates to a heat dissipating device and a vehicle, comprising a shell, at least one heat dissipating piece and a heat dissipating device, wherein the shell is provided with a containing cavity for containing cooling liquid, the heat dissipating piece is arranged in the containing cavity, a first flow channel is formed between the heat dissipating piece and the inner wall of the containing cavity at intervals, the first flow channel is provided with a first liquid inlet side and a first liquid outlet side, and the interval between the heat dissipating piece and the inner wall of the containing cavity is gradually increased along the direction of the first liquid inlet side towards the first liquid outlet side. Through the technical scheme, the heat dissipation effect of the heat dissipation device is improved.

Inventors

• GUO YUMING
• YU HONGYI
• WANG HONGTAO
• CHEN YUHONG

Assignees

• 比亚迪股份有限公司

Dates

Publication Date

20260508

Application Date

20241108

Claims (19)

1. 1. A heat sink, the heat sink comprising: A housing having a receiving chamber for receiving a cooling liquid; At least one heat dissipation piece is arranged in the accommodating cavity, a first flow channel is formed between the heat dissipation piece and the inner wall of the accommodating cavity at intervals, the first flow channel is provided with a first liquid inlet side and a first liquid outlet side, and the interval between the heat dissipation piece and the inner wall of the accommodating cavity is gradually increased along the direction from the first liquid inlet side to the first liquid outlet side.
2. 2. The heat dissipating device of claim 1, wherein the receiving cavity has a first side wall and a second side wall disposed opposite each other, the heat dissipating member being disposed on the first side wall, the heat dissipating member having the first flow path formed between a side thereof adjacent to the second side wall and the second side wall.
3. 3. The heat dissipating device according to claim 2, wherein a distance between a side of the heat dissipating member adjacent to the second side wall and the second side wall in an extending direction of the first flow channel gradually increases in a direction from the first liquid inlet side toward the first liquid outlet side.
4. 4. The heat dissipating device of claim 1, wherein the heat dissipating device comprises a plurality of heat dissipating members, wherein a plurality of heat dissipating members are disposed at intervals, and wherein a second flow path is formed between two adjacent heat dissipating members.
5. 5. The heat dissipating device of claim 4, wherein the second flow channel has a second liquid inlet side and a second liquid outlet side, and wherein the cross-sectional flow area of the second flow channel increases gradually in the direction of the second liquid inlet side toward the second liquid outlet side in the extending direction of the second flow channel.
6. 6. The heat sink of claim 5, wherein the direction of the first liquid inlet side toward the first liquid outlet side is the same as the direction of the second liquid inlet side toward the second liquid outlet side.
7. 7. The heat dissipating device of claim 5, wherein an extension width of said heat dissipating member gradually decreases from said second liquid inlet side toward said second liquid outlet side in an extension direction of said second flow path.
8. 8. The heat sink of claim 4 wherein the spacing between the opposing sidewalls of adjacent heat sinks is L,0.5mm L1 mm.
9. 9. The heat sink of claim 2, wherein the height of the heat sink decreases gradually in a direction from the first liquid inlet side toward the first liquid outlet side, and/or, The distance between the first side wall and the second side wall gradually increases along the direction from the first liquid inlet side to the first liquid outlet side.
10. 10. The heat sink of claim 9, wherein the angle between the plane of the second sidewall and the plane of the top of the heat sink is R,4 ° -R +.6 °.
11. 11. The heat sink of claim 1, further comprising a wicking structure disposed on and/or spaced apart from the side walls of the heat sink, the wicking structure configured to maintain the wettability of the side walls of the heat sink.
12. 12. The heat dissipating device of claim 11, wherein the liquid absorbing structure comprises a plurality of columns spaced from the side walls of the heat dissipating member, and wherein the plurality of columns are arranged along the extending direction of the heat dissipating member.
13. 13. The heat dissipating device of claim 12, wherein a plurality of said posts are provided on both sides of said heat dissipating member.
14. 14. The heat spreading device according to claim 11, wherein the wick structure comprises a plurality of grooves, a plurality of the grooves being provided on a side wall of the heat spreading member.
15. 15. The heat sink of claim 1, wherein the housing comprises: An upper cover having a protrusion; the box, with the upper cover is connected, the box has the holding tank, the holding tank forms heat transfer portion, heat transfer portion's outer wall be used for with components and parts contact in order to right components and parts dispel the heat, protruding with the holding tank corresponds the setting, protruding at least part is located in the holding tank in order to with the holding tank mutually support and form the holding chamber, just protruding corresponds one side of holding tank forms the second lateral wall.
16. 16. The heat dissipating device of claim 15, wherein said housing further comprises a liquid inlet and a liquid outlet, said liquid inlet and said liquid outlet being respectively connected to said housing, said first liquid inlet side being in communication with said liquid inlet, said first liquid outlet side being in communication with said liquid outlet.
17. 17. The heat sink of claim 15, further comprising a seal disposed between the upper cover and the housing, the seal configured to seal a gap between the upper cover and the housing.
18. 18. The heat sink of claim 16, wherein the seal is disposed on the housing and the seal is disposed circumferentially along a rim of the receiving groove.
19. 19. A vehicle comprising a heat dissipating device as defined in any one of claims 1-18.

Description

Heat dissipation device and vehicle Technical Field The present disclosure relates to heat dissipation devices, and particularly to a heat dissipation device and a vehicle. Background At present, with the deep progress of the improvement of the intelligent technology of the automobile, high-integration, high-calculation-force and high-power electronic equipment represented by an automatic driving chip is greatly increased, and in order to maintain the normal operation and prolong the service life of the electronic equipment, a high-efficiency thermal management system becomes a focus of research. Therefore, the method provides new challenges for the traditional technical scheme mainly comprising natural convection and single-phase forced convection liquid cooling. The existing heat dissipation technology of the vehicle-mounted domain controller mainly comprising natural convection and single-phase forced convection is difficult to meet the heat exchange requirement of high-power electronic equipment, and is more difficult to face the serious challenges of the future high-power vehicle-mounted integrated chips. Therefore, the above solution cannot meet the heat dissipation requirement of the component. Disclosure of Invention The embodiment of the application provides a heat dissipation device and a vehicle, which improve the heat dissipation effect of the heat dissipation device and at least partially solve the technical problems. In order to achieve the above object, according to a first aspect of the present application, there is provided a heat dissipating device including a housing having a receiving chamber for receiving a cooling liquid, and at least one heat dissipating member disposed in the receiving chamber, the heat dissipating member being formed with a first flow path at an interval from an inner wall of the receiving chamber, the first flow path having a first liquid inlet side and a first liquid outlet side, the interval between the heat dissipating member and the inner wall of the receiving chamber being gradually increased in a direction from the first liquid inlet side toward the first liquid outlet side. Optionally, the accommodating cavity is provided with a first side wall and a second side wall heat dissipation piece which are oppositely arranged, the first side wall is arranged on the first side wall, and a first flow channel is formed between one side of the heat dissipation piece, which is close to the second side wall, and the second side wall. Optionally, the first flow channel has a first liquid inlet side and a first liquid outlet side, and in the extending direction of the first flow channel, a distance between a side of the heat dissipation element, which is close to the second side wall, and the second side wall gradually increases along a direction of the first liquid inlet side towards the first liquid outlet side. Optionally, the heat dissipating device includes a plurality of heat dissipating members, the plurality of heat dissipating members are disposed at intervals, and a second flow channel is formed between two adjacent heat dissipating members. Optionally, the second flow channel has a second liquid inlet side and a second liquid outlet side, and in the extending direction of the second flow channel, the flow cross-sectional area of the second flow channel gradually increases along the direction of the second liquid inlet side toward the second liquid outlet side. Optionally, the direction of the first liquid inlet side towards the first liquid outlet side is the same as the direction of the second liquid inlet side towards the second liquid outlet side. Optionally, in the extending direction of the second flow channel, the extending width of the heat dissipation element gradually decreases from the second liquid inlet side toward the second liquid outlet side. Optionally, the distance between the opposite side walls of two adjacent heat dissipation elements is L, and L is more than or equal to 0.5mm and less than or equal to 1mm. Optionally, the height of the heat dissipation element gradually decreases along the direction of the first liquid inlet side towards the first liquid outlet side and/or the distance between the first side wall and the second side wall gradually increases along the direction of the first liquid inlet side towards the first liquid outlet side. Optionally, an included angle between a plane where the second side wall is located and a plane where the top of the heat dissipation element is located is R, where R is greater than or equal to 4 ° and less than or equal to 6 °. Optionally, the heat dissipating device further includes a liquid absorbing structure disposed on a side wall of the heat dissipating member and/or spaced from the side wall of the heat dissipating member, the liquid absorbing structure being configured to maintain a wettability of the side wall of the heat dissipating member. Optionally, the liquid absorbing structure compri